XmlAttributeCollection.Prepend(XmlAttribute) 方法

定义

命名空间:

System.Xml

程序集:

System.Xml.dll, System.Xml.XmlDocument.dll

程序集:

System.Xml.ReaderWriter.dll

程序集:

System.Xml.XmlDocument.dll

程序集:

System.Xml.dll

程序集:

netstandard.dll

将指定特性插入集合中，并将其作为集合的第一个节点。

public:
 System::Xml::XmlAttribute ^ Prepend(System::Xml::XmlAttribute ^ node);

public:
 virtual System::Xml::XmlAttribute ^ Prepend(System::Xml::XmlAttribute ^ node);

public System.Xml.XmlAttribute Prepend (System.Xml.XmlAttribute node);

public virtual System.Xml.XmlAttribute Prepend (System.Xml.XmlAttribute node);

member this.Prepend : System.Xml.XmlAttribute -> System.Xml.XmlAttribute

abstract member Prepend : System.Xml.XmlAttribute -> System.Xml.XmlAttribute
override this.Prepend : System.Xml.XmlAttribute -> System.Xml.XmlAttribute

Public Function Prepend (node As XmlAttribute) As XmlAttribute

Public Overridable Function Prepend (node As XmlAttribute) As XmlAttribute

参数

node

XmlAttribute

要插入的属性。

返回

XmlAttribute

添加到集合中的 XmlAttribute。

示例

以下示例向文档添加新属性。

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book ISBN='1-861001-57-5'><title>Pride And Prejudice</title></book>" );
   
   //Create a new attribute.
   XmlAttribute^ newAttr = doc->CreateAttribute( "genre" );
   newAttr->Value = "novel";
   
   //Create an attribute collection and add the new attribute
   //to the collection.
   XmlAttributeCollection^ attrColl = doc->DocumentElement->Attributes;
   attrColl->Prepend( newAttr );
   Console::WriteLine( "Display the modified XML...\r\n" );
   Console::WriteLine( doc->OuterXml );
}

using System;
using System.IO;
using System.Xml;

public class Sample
{
  public static void Main(){

    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    //Create a new attribute.
    XmlAttribute newAttr = doc.CreateAttribute("genre");
    newAttr.Value = "novel";

    //Create an attribute collection and add the new attribute
    //to the collection.
    XmlAttributeCollection attrColl = doc.DocumentElement.Attributes;
    attrColl.Prepend(newAttr);

    Console.WriteLine("Display the modified XML...\r\n");
    Console.WriteLine(doc.OuterXml);
  }
}

Imports System.IO
Imports System.Xml

public class Sample

  public shared sub Main()
  
    Dim doc as XmlDocument = new XmlDocument()
    doc.LoadXml("<book ISBN='1-861001-57-5'>" & _
                "<title>Pride And Prejudice</title>" & _
                "</book>")      

    'Create a new attribute.
    Dim newAttr as XmlAttribute = doc.CreateAttribute("genre")
    newAttr.Value = "novel"

    'Create an attribute collection and add the new attribute
    'to the collection.  
    Dim attrColl as XmlAttributeCollection = doc.DocumentElement.Attributes
    attrColl.Prepend(newAttr)

    Console.WriteLine("Display the modified XML...")
    Console.WriteLine(doc.OuterXml)

  end sub
end class

注解

如果集合中已存在具有相同名称的属性，则会从集合中删除原始属性，并将其 node 添加到集合的开头。

此方法是文档对象模型的 Microsoft 扩展， (DOM) 。